1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    *
5    *
6    *
7    * The contents of this file are subject to the terms of the Liferay Enterprise
8    * Subscription License ("License"). You may not use this file except in
9    * compliance with the License. You can obtain a copy of the License by
10   * contacting Liferay, Inc. See the License for the specific language governing
11   * permissions and limitations under the License, including but not limited to
12   * distribution rights of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.kernel.servlet;
24  
25  import com.liferay.portal.kernel.log.Log;
26  import com.liferay.portal.kernel.log.LogFactoryUtil;
27  import com.liferay.portal.kernel.util.PortalClassLoaderUtil;
28  import com.liferay.portal.kernel.util.PortalInitable;
29  import com.liferay.portal.kernel.util.PortalInitableUtil;
30  
31  import java.io.IOException;
32  
33  import javax.servlet.ServletConfig;
34  import javax.servlet.ServletException;
35  import javax.servlet.http.HttpServlet;
36  import javax.servlet.http.HttpServletRequest;
37  import javax.servlet.http.HttpServletResponse;
38  
39  /**
40   * <a href="PortalClassLoaderServlet.java.html"><b><i>View Source</i></b></a>
41   *
42   * @author Brian Wing Shun Chan
43   */
44  public class PortalClassLoaderServlet
45      extends HttpServlet implements PortalInitable {
46  
47      public void destroy() {
48          Thread currentThread = Thread.currentThread();
49  
50          ClassLoader contextClassLoader = currentThread.getContextClassLoader();
51  
52          try {
53              currentThread.setContextClassLoader(
54                  PortalClassLoaderUtil.getClassLoader());
55  
56              _servlet.destroy();
57          }
58          finally {
59              currentThread.setContextClassLoader(contextClassLoader);
60          }
61      }
62  
63      public void init(ServletConfig servletConfig) {
64          _servletConfig = servletConfig;
65  
66          PortalInitableUtil.init(this);
67      }
68  
69      public void portalInit() {
70          Thread currentThread = Thread.currentThread();
71  
72          ClassLoader contextClassLoader = currentThread.getContextClassLoader();
73  
74          ClassLoader portalClassLoader = PortalClassLoaderUtil.getClassLoader();
75  
76          try {
77              currentThread.setContextClassLoader(portalClassLoader);
78  
79              String servletClass = _servletConfig.getInitParameter(
80                  "servlet-class");
81  
82              _servlet = (HttpServlet)portalClassLoader.loadClass(
83                  servletClass).newInstance();
84  
85              _servlet.init(_servletConfig);
86          }
87          catch (Exception e) {
88              _log.error(e, e);
89          }
90          finally {
91              currentThread.setContextClassLoader(contextClassLoader);
92          }
93      }
94  
95      public void service(
96              HttpServletRequest request, HttpServletResponse response)
97          throws IOException, ServletException {
98  
99          Thread currentThread = Thread.currentThread();
100 
101         ClassLoader contextClassLoader = currentThread.getContextClassLoader();
102 
103         try {
104             currentThread.setContextClassLoader(
105                 PortalClassLoaderUtil.getClassLoader());
106 
107             _servlet.service(request, response);
108         }
109         finally {
110             currentThread.setContextClassLoader(contextClassLoader);
111         }
112     }
113 
114     private static Log _log =
115         LogFactoryUtil.getLog(PortalClassLoaderServlet.class);
116 
117     private HttpServlet _servlet;
118     private ServletConfig _servletConfig;
119 
120 }